Custom IR Long Pass Filters

Andover can design and fabricate long pass filters to suit your particular requirements. Every phase of the process is performed in-house, including thin-film coating design, mechanical design, substrate fabrication and coating, inspection, and environmental testing.

We can coat a variety of substrate materials, including Germanium, Sapphire, Silicon, Zinc Sulfide, and Zinc Selenide. We can produce custom sizes and shapes as well.

Contact us for a quotation, whether it is for prototype quantities, or production quantities.